- Large Opening Design: The 2L hydration reservoir features a wide opening for easy filling and cleaning. It allows for hassle-free access with hands or a bottle brush, ensuring your hydration needs are met without struggle. The screw cap is designed for effortless opening and closing. - Durable and Versatile: This 2L water bladder withstands temperatures ranging from 20 to 50 degrees Celsius. Its tube resists temperature fluctuations in hot or cold weather. Built with abrasion-resistant, bend-proof, and tear-resistant materials, it is designed for long-lasting use under various conditions. - Optimal Water Flow: The tube has a diameter of 0.4 inches, ensuring a steady stream of water for quick and easy drinking. Stay hydrated whether you're camping, cycling, hiking, or running—all with minimal effort. - Enhanced Leak Protection: Our water bag incorporates dual-seal technology with a self-locking joint, a wide bite valve with a switch, and a dust cover. It has passed rigorous air pressure tests, guaranteeing it is completely leak-proof and safe for your excursions. Stay prepared for your outdoor adventures with a reliable and user-friendly hydration system that ensures easy access to water whenever you need it.